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mm: define general function pXd_init()

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pud_init(), pmd_init() and kernel_pte_init() are duplicated defined in
file kasan.c and sparse-vmemmap.c as weak functions.  Move them to generic
header file pgtable.h, architecture can redefine them.

Link: https://lkml.kernel.org/r/20241104070712.52902-1-maobibo@loongson.cn
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Bibo Mao 2024-11-04 15:07:12 +08:00 committed by Andrew Morton
parent 7591c127f3
commit 7269ed4af3
6 changed files with 26 additions and 27 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
arch/loongarch/include/asm/pgtable.h
View file

@ -268,8 +268,11 @@ extern void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pm
*/
extern void pgd_init(void *addr);
extern void pud_init(void *addr);
#define pud_init pud_init
extern void pmd_init(void *addr);
#define pmd_init pmd_init
extern void kernel_pte_init(void *addr);
#define kernel_pte_init kernel_pte_init
/*
* Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that

2
arch/mips/include/asm/pgtable-64.h
View file

@ -317,7 +317,9 @@ static inline pmd_t *pud_pgtable(pud_t pud)
*/
extern void pgd_init(void *addr);
extern void pud_init(void *addr);
#define pud_init pud_init
extern void pmd_init(void *addr);
#define pmd_init pmd_init
/*
* Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that

3
include/linux/mm.h
View file

@ -3819,9 +3819,6 @@ void *sparse_buffer_alloc(unsigned long size);
struct page * __populate_section_memmap(unsigned long pfn,
unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
struct dev_pagemap *pgmap);
void pud_init(void *addr);
void pmd_init(void *addr);
void kernel_pte_init(void *addr);
pgd_t *vmemmap_pgd_populate(unsigned long addr, int node);
p4d_t *vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node);
pud_t *vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node);

21
include/linux/pgtable.h
View file

@ -90,6 +90,27 @@ static inline unsigned long pud_index(unsigned long address)
#define pgd_index(a) (((a) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#endif
#ifndef kernel_pte_init
static inline void kernel_pte_init(void *addr)
{
}
#define kernel_pte_init kernel_pte_init
#endif
#ifndef pmd_init
static inline void pmd_init(void *addr)
{
}
#define pmd_init pmd_init
#endif
#ifndef pud_init
static inline void pud_init(void *addr)
{
}
#define pud_init pud_init
#endif
#ifndef pte_offset_kernel
static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
{

12
mm/kasan/init.c
View file

@ -106,10 +106,6 @@ static void __ref zero_pte_populate(pmd_t *pmd, unsigned long addr,
}
}
void __weak __meminit kernel_pte_init(void *addr)
{
}
static int __ref zero_pmd_populate(pud_t *pud, unsigned long addr,
unsigned long end)
{
@ -145,10 +141,6 @@ static int __ref zero_pmd_populate(pud_t *pud, unsigned long addr,
return 0;
}
void __weak __meminit pmd_init(void *addr)
{
}
static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr,
unsigned long end)
{
@ -187,10 +179,6 @@ static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr,
return 0;
}
void __weak __meminit pud_init(void *addr)
{
}
static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
unsigned long end)
{

12
mm/sparse-vmemmap.c
View file

@ -184,10 +184,6 @@ static void * __meminit vmemmap_alloc_block_zero(unsigned long size, int node)
return p;
}
void __weak __meminit kernel_pte_init(void *addr)
{
}
pmd_t * __meminit vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node)
{
pmd_t *pmd = pmd_offset(pud, addr);
@ -201,10 +197,6 @@ pmd_t * __meminit vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node)
return pmd;
}
void __weak __meminit pmd_init(void *addr)
{
}
pud_t * __meminit vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node)
{
pud_t *pud = pud_offset(p4d, addr);
@ -218,10 +210,6 @@ pud_t * __meminit vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node)
return pud;
}
void __weak __meminit pud_init(void *addr)
{
}
p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
{
p4d_t *p4d = p4d_offset(pgd, addr);